APA Style

Pernoll, M, L., Benson, R, C. (1987). Current obstetric & gynecologic diagnosis & treatment 1987 (6th). Norwalk, Conn: Appleton & Lange.

MLA Style

Pernoll, Martin, L.., Benson, Ralph, C.. "Current obstetric & gynecologic diagnosis & treatment 1987". 6th Norwalk, Conn: Appleton & Lange, 1987. Text.